What is a common central venous line care practice to maintain patency?

• A. Flush with sterile saline after each use and routinely use heparin.
• B. Flush with sterile water after each use.
• C. Do not flush the line.
• D. Follow catheter care protocols and institutional guidelines, including avoiding routine heparin unless required.

Answer: (D)

Maintaining patency comes from using evidence-based catheter care protocols rather than a one-size-fits-all approach. Following established catheter care protocols and institutional guidelines ensures the flushing solution, frequency, and technique are appropriate for the specific device and patient, and it helps minimize risks from unnecessary medications.

This option is best because it acknowledges that routine heparinization is not universally required and should be used only if the protocol or clinician’s assessment calls for it. By adhering to guidelines, you use saline flushes after use and maintain consistent, safe practices across the team, while avoiding unnecessary exposure to heparin and its potential complications.

Flushing with sterile water after each use is not standard practice for maintaining CVC patency, since saline is typically preferred for its isotonic properties and compatibility with lumen coatings. Not flushing the line at all would risk occlusion and infection. Relying on a fixed routine of heparin without the institutional guidance can lead to adverse effects and isn’t aligned with current evidence-based care.